Google's latest venture in the field of renewable energy is a "flying wind turbine," a so-called energy kite.

The energy kite eliminates 90% of the material used in conventional wind systems. It generates power through a tethered airfoil that flies in large circles at up to 1,000 feet altitude, where the wind is stronger and more consistent than the winds reached by conventional systems.

Google hopes to start a pilot project to test the energy kite on a plot of land on the Big Island of Hawaii. The project is being run by Makani Power, which Google acquired last year.

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